Improvement in wrenches



S. W. WAKEFIELD.

Wrenches.

N0, 141,477I PatentedAugust, 1873.

UNITED STATES PATENT FFICE.

SAMUEL W. WAKEFIELD, OF KEOKUK, IOWA.

IMPROVEMENT IN WRENCHES.

Specification forming part of Letters Patent No. 141,477, dated August5, 1873; application filed May 16,1813.

To all whom it may concern:

Be it known that I, SAMUEL W. WAKE- vFIELD, of Keokuk, in the county ofLee and State of Iowa, have invented certain new and useful Improvementsin Wrenches; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it pertains to make and use it, referencebeing had to the accompanying drawings, which form p rt of thisspecification.

The awing represents a perspective view of the Wrench.

The object of my invention is to provide a convenient-sized bolt-wrenchpossessing the requisite strength for light or heavy work; and consistsof a tapered slot, the large end of which is toward the handle of thewrench, and the other end is closed, and the inner surface of one sideof the wrench is serrated.

A is the Wrench, and B the handle. C is an elongated tapered slot, thelarge end of which is toward the handle,and the other end D is closed,and the inner surface cl of one side is serrated.

The largest bolts, which require the greatest force to operate them, arenecessarily operated by the upper part of an open end wrench, Wherepressure causes the greatest strain upon the jaws; but by making theWrench with the large end of the slot to the handle, as shown in thedrawing, the largest bolts are operated by that part of the wrench whichis nearest to the handle, where the same degree of pressure causes theleast strain up-V on the wrench. This arrangement, and the closing ofthe end, as described, greatly increase the strength of the wrench,whichis of special advantage for heavy work requiring such strength as withan open end can be obtained only by making the tool so large as torender it inconvenient for use.

What I claim, and desire to secure by Let.

ters Patent, is-

The wrench'A B having tapered slot C,With the large end of the slottoward the handle and the other end D closed,'and the side d serrated,substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this7th day of May, 1873.

SAMUEL W. WAKEFIELD.

Witnesses HENRY W. RoTHERT, W. B. COLLINS.

